A famous subject to King Sukjong during the late Joseon dynasty, his pen name was Yakcheon, and his ancestor originated from Uiryeong. In 1656 (the seventh year of King Hyojong), as he passed Byeolsimungwa (the civil service examination), he held several offices titled Hanseongbujwayun, Daejehak, Daesagan, and Uuijeong, until he ascended to Yeonguijeong (governor) in 1687 (the 13th year of King Sukjong). In 1707 (the 33rd year of King Sukjong), he became Bonjoha (put on the government´s payroll but not actually working). Nam Gu-man (Yakcheon) leading the Soron faction in the whirlpool of factional strife (during the late Joseon dynasty) took sides with Song Si-yeol, who was opposed to King Sukjong. The King tried to install as Crown Prince a son begotten from his concubine Jang Hui-bin in 1689 (the 15th year of King Sukjong).
He then was deprived of his position, and went into exile at what is currently Simgokmaeul, Mangsang-dong, Donhae-si, until the government called him again in 1690. Even today people love to recite one of his famous Sijo (poems) recorded in the Cheongguyeongeon anthology “With dawning, skylarks sing. Is the boy attending to cows still asleep? When will he plough the long field over the hill?” He is known to have composed that poem while staying here. ´Jaeneomeo (over the hill) and Saraeginbat (the long field) depicted in the poem, as well as a spring from which he drank, still exist here today. He has left a literary book called Yakcheonjib.